robustesvsrobustesseWhat's the difference?

Quick tell: robustes is a adjective, robustesse is a noun, so they fill different roles in a sentence.

Which to use

“robustes” is an adjective and “robustesse” is a noun - they look or sound alike but fill different roles in a sentence.

#22,076
“robustes” frequency rank
#29,950
“robustesse” frequency rank
52026
confusion score

Side-by-Side Comparison

Feature robustes robustesse
Definition Pluriel de robuste. Force, vigueur, en parlant d'une personne.

Where the eye mixes robustes and robustesse

Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.

8 ch
robustes
10 ch
robustesse

Visual trap between robustes and robustesse

These two trip readers on the page rather than in the ear: robustes is \ʁɔ.byst\ while robustesse is \ʁɔ.bys.tɛs\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “robustes” sits inside “robustesse”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 52026, derived from the frequency rank of both members and their visual similarity.

robustes is recorded at frequency rank #22,076, classified as anadj, pronounced \ʁɔ.byst\. robustesse is at rank #29,950, tagged as anoun, pronounced \ʁɔ.bys.tɛs\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 52026, this pair ranks #150,707 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of robustes vs robustesse

Shared letters: beorstu. Private to "robustes": -. Private to "robustesse": -.

"robustes" · 8 letters · shape CVCVCCVC  ·  "robustesse" · 10 letters · shape CVCVCCVCCV

Known mistypes of this pair

  • robustesorbustes · rboustes · robbustes · robsutes · robusets · robusstes · robustess · robustse
  • robustesseorbustesse · rboustesse · robbustesse · robsutesse · robusetsse · robusstesse · robustese · robusteses

Frequently Asked Questions

Is swapping "robustes" for "robustesse" ever safe?
No - they are not even the same part of speech. "robustes" is an adjective and "robustesse" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "robustes" or "robustesse" show up more?
"robustes" is the more common of the two: it sits at frequency rank #22,076 in our French list, against #29,950 for "robustesse". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "robustes" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "robustesse" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #150,707 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "robustes" and "robustesse" also get mixed up with nearby pairs, the highest-scored neighbour is "robustes vs rousses". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #150,707 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list